81611640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{557}}^1$

素因数の和:622

約数の個数: 192

約数和(自身を含む): 297704160

約数和(自身を除く): 216092520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 37, 40, 44, 45, 55, 60, 66, 72, 74, 88, 90, 99, 110, 111, 120, 132, 148, 165, 180, 185, 198, 220, 222, 264, 296, 330, 333, 360, 370, 396, 407, 440, 444, 495, 555, 557, 660, 666, 740, 792, 814, 888, 990, 1110, 1114, 1221, 1320, 1332, 1480, 1628, 1665, 1671, 1980, 2035, 2220, 2228, 2442, 2664, 2785, 3256, 3330, 3342, 3663, 3960, 4070, 4440, 4456, 4884, 5013, 5570, 6105, 6127, 6660, 6684, 7326, 8140, 8355, 9768, 10026, 11140, 12210, 12254, 13320, 13368, 14652, 16280, 16710, 18315, 18381, 20052, 20609, 22280, 24420, 24508, 25065, 29304, 30635, 33420, 36630, 36762, 40104, 41218, 48840, 49016, 50130, 55143, 61270, 61827, 66840, 73260, 73524, 82436, 91905, 100260, 103045, 110286, 122540, 123654, 146520, 147048, 164872, 183810, 185481, 200520, 206090, 220572, 226699, 245080, 247308, 275715, 309135, 367620, 370962, 412180, 441144, 453398, 494616, 551430, 618270, 680097, 735240, 741924, 824360, 906796, 927405, 1102860, 1133495, 1236540, 1360194, 1483848, 1813592, 1854810, 2040291, 2205720, 2266990, 2473080, 2720388, 3400485, 3709620, 4080582, 4533980, 5440776, 6800970, 7419240, 8161164, 9067960, 10201455, 13601940, 16322328, 20402910, 27203880, 40805820, 81611640]

約数ペア:

[(1, 81611640), (2, 40805820), (3, 27203880), (4, 20402910), (5, 16322328), (6, 13601940), (8, 10201455), (9, 9067960), (10, 8161164), (11, 7419240), (12, 6800970), (15, 5440776), (18, 4533980), (20, 4080582), (22, 3709620), (24, 3400485), (30, 2720388), (33, 2473080), (36, 2266990), (37, 2205720), (40, 2040291), (44, 1854810), (45, 1813592), (55, 1483848), (60, 1360194), (66, 1236540), (72, 1133495), (74, 1102860), (88, 927405), (90, 906796), (99, 824360), (110, 741924), (111, 735240), (120, 680097), (132, 618270), (148, 551430), (165, 494616), (180, 453398), (185, 441144), (198, 412180), (220, 370962), (222, 367620), (264, 309135), (296, 275715), (330, 247308), (333, 245080), (360, 226699), (370, 220572), (396, 206090), (407, 200520), (440, 185481), (444, 183810), (495, 164872), (555, 147048), (557, 146520), (660, 123654), (666, 122540), (740, 110286), (792, 103045), (814, 100260), (888, 91905), (990, 82436), (1110, 73524), (1114, 73260), (1221, 66840), (1320, 61827), (1332, 61270), (1480, 55143), (1628, 50130), (1665, 49016), (1671, 48840), (1980, 41218), (2035, 40104), (2220, 36762), (2228, 36630), (2442, 33420), (2664, 30635), (2785, 29304), (3256, 25065), (3330, 24508), (3342, 24420), (3663, 22280), (3960, 20609), (4070, 20052), (4440, 18381), (4456, 18315), (4884, 16710), (5013, 16280), (5570, 14652), (6105, 13368), (6127, 13320), (6660, 12254), (6684, 12210), (7326, 11140), (8140, 10026), (8355, 9768)]